CN103898391A - Loading control method for converter high alloy steel scrap - Google Patents
Loading control method for converter high alloy steel scrap Download PDFInfo
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- CN103898391A CN103898391A CN201210567743.8A CN201210567743A CN103898391A CN 103898391 A CN103898391 A CN 103898391A CN 201210567743 A CN201210567743 A CN 201210567743A CN 103898391 A CN103898391 A CN 103898391A
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Abstract
A loading control method for converter high alloy steel scrap is characterized by comprising the following steps: (1) according to the type of steel and a target tapping weight of the converter, calculating a total target weight of the steel scrap added to the converter (WTscrap); (2) determining whether the steel type has high alloy content requirement; if no, converting to matching calculation of ordinary steel scrap and adding the steel scrap; and if yes, entering a the next step (3); (3) calculating and feeding back the addition amount of high alloy in the total target weight of the steel scrap, and determining whether the addition amount of high alloy steel in the total target weight of steel scrap of the steel type satisfies the requirements; and (4) if yes, converting to matching calculation of ordinary steel scrap and adding the steel scrap; and if no, then conducting calculation of ordinary alloy addition amount, and adding the ordinary alloy until it meets the requirements. According to the invention, on the promise of guaranteeing molten steel composition control, consumption cost of ordinary alloy is reduced.
Description
Technical field
The present invention relates to metallurgical converter production control field, particularly, the present invention relates to the control method that packs into of converter high alloy steel scrap in converter steelmaking process.
Background technology
In convertor steelmaking process, often need to add one or more alloying elements, make it reach the specification requirement of institute's steelmaking kind composition.Particularly, in the time smelting high quality steel, the add-on of iron alloy is larger.Owing to containing precious metal element, the price of iron alloy is often higher, has accounted for the larger proportion of STEELMAKING PRODUCTION cost.In order to fall low alloy-consumption, steel scrap higher alloy part content (hereinafter to be referred as " high alloy steel scrap ") can be packed into converter before blowing, to reduce the input amount of alloy, reduce alloy use cost.
The kind of high alloy steel scrap is more, and its contained metallic element kind and ratio is had nothing in common with each other, so different blowing steel grades need to adopt different high alloy steel scrap mix proportion schemes, is usually difficult to accurately hold the reinforced rule of alloy in stove by manual operations.
To be " CN200510126463.3 ", denomination of invention disclose a kind of method of utilizing stanniferous steel scrap to produce free-cutting steel for the patent of invention of " utilizing stanniferous steel scrap to produce free-cutting steel " to the patent No..It is characterized in that, to 5%～20% stanniferous steel scrap through overcompaction that adds steel scrap target total amount in steel melting furnace, in ladle furnace refining process, add again 5%～15% the stanniferous steel scrap through overcompaction and baking that accounts for molten steel total amount.After compacting, stanniferous steel scrap lumpiness is less than 200 × 200mm, and storing temperature is not less than 300 ℃.
According to this technical scheme, in refining process, the joining day of stanniferous steel scrap is before alloying, to join in ladle after deoxidation of molten steel, the condition that adds is that molten steel oxygen activity after deoxidation is not higher than 150 × 10-6, while adding the stanniferous steel scrap after baking, in ladle furnace, liquid steel temperature is higher 30～50 ℃ than the liquid steel temperature that does not add stanniferous steel scrap.The tin iron alloy of this method using stanniferous steel scrap as steel-making, the rate of recovery of tin reaches more than 95%, has reasonably utilized secondary metals resource.But above-mentioned patent not yet relates to the control that packs into for high alloy steel scrap, in above-mentioned patented technology scheme, just utilize stanniferous steel scrap to produce free-cutting steel as the tin iron alloy of steel-making.Therefore, its steel grade subject range is narrow, cannot in converter smelting, make full use of the multiple high alloy steel scrap of extensive existence.
And its principal character of the present invention is according to the alloying element content of target steel grade, calculate the usage quantity of the common alloy such as maximum high alloy adding amount of scrap steel and other copper coins that can substitute common alloy, there is the distinguishing feature of steel grade wide accommodation.
Other some prior proprietary technologies schemes, for example, the patent No. is " CN201110354275.1 ", denomination of invention is " a kind of impurity metallic elements extraction element and method of Electric furnace steel making scrap steel preheating ", and the patent No. is " CN201210047966.1 ", the patented technology scheme that denomination of invention is " utilizing steel scrap to substitute pig iron smelting D-type graphite alloy cast iron glass mold " etc. does not all relate to how according to the alloy content requirement of target steel grade, calculate the problem of usage quantity of the common alloy such as maximum high alloy adding amount of scrap steel and other copper coins that can substitute common alloy etc., its steel grade subject range is narrow.
Summary of the invention
For addressing the above problem, the object of the invention is to: the control method that packs into that a kind of converter high alloy steel scrap is provided, described converter high alloy steel scrap pack the controlling party genealogy of law into according to the alloying element content of target steel grade, calculate the maximum high alloy adding amount of scrap steel that can substitute common alloy, instruct thus the weighing action command of establishment steel scrap.
Steel scrap is one of main raw material of oxygen top blown converter steel making, is the stable refrigerant of cooling performance.High alloy steel scrap refers to the not oxidizable special steel scraps of converter smelting interalloy element such as containing a certain amount of Cu, Ni, Cr, Mo and W.At the suitable high alloy steel scrap of main raw material loading phase proportioning, can guarantee, on the basis of molten steel composition control, to reduce the consuming cost of common alloy.
According to the present invention, on the basis of the constituent content control of realize target steel grade, reach and rationally utilize secondary metals resource, reduce the object that alloy smelting consumes.
Technical scheme of the present invention is as follows:
Converter high alloy steel scrap pack a control method into, it is characterized in that, described method comprises the steps:
(1) according to steel grade and converter target tap, calculating must add the steel scrap target total amount in converter, and described steel scrap target total amount is calculated by main raw material computation model,
(2) judge that described steel grade has or not high alloy content requirement,
As nothing, the proportioning that proceeds to ordinary scrap steel is calculated and is dropped into,
If any, entering following step (3), the high alloy adding amount of scrap steel carrying out in steel scrap target total amount calculates and drops into,
(3) the high alloy adding amount of scrap steel carrying out in steel scrap target total amount calculates and feeds back, and judges whether the high alloy adding amount of scrap steel in the steel scrap target total amount of described steel grade meets alloying element content requirement,
(4), as met alloying element content requirement, the proportioning that proceeds to ordinary scrap steel is calculated and is dropped into,
As do not meet alloying element content requirement, carry out again common alloy addition calculating and input, until meet the requirements.
Steel scrap is one of main raw material of oxygen top blown converter steel making, is the stable refrigerant of cooling performance.High alloy steel scrap refers to the not oxidizable special steel scraps of converter smelting interalloy element such as containing a certain amount of Cu, Ni, Cr, Mo and W.At the suitable high alloy steel scrap of main raw material loading phase proportioning, can guarantee, on the basis of molten steel composition control, to reduce the consuming cost of common alloy.
According to the present invention, ordinary scrap steel is the general steel scrap that does not contain the alloying elements such as Cu, Ni, Cr, Mo and W.High alloy steel scrap refers to the not oxidizable special steel scraps of converter smelting interalloy element such as containing a certain amount of Cu, Ni, Cr, Mo or W.Described main raw material computation model is active computer calculating control system.
According to the control method that packs into of a kind of converter high alloy steel scrap of the present invention, it is characterized in that, in step (3), the high alloy adding amount of scrap steel in described steel scrap target total amount is controlled, the proportion that described high alloy adding amount of scrap steel accounts for steel scrap target total amount is no more than 50%
Described high alloy steel scrap refer to contain a certain amount of Cu, Ni, Cr, Mo or W one or more, at the not oxidizable special steel scrap of converter smelting interalloy element.
According to the control method that packs into of a kind of converter high alloy steel scrap of the present invention, it is characterized in that, described high alloy steel scrap is heavy high alloy steel scrap.
Heavy high alloy steel scrap: refer to the block high alloy steel scrap of substance between 1.0 tons～1.5 tons.
According to the control method that packs into of a kind of converter high alloy steel scrap of the present invention, it is characterized in that, the content of any of Cu, the Ni of described high alloy steel scrap or Mo is at 0.2%-10%.
In actual use, there is the steel grade of content requirement quite few to [W]; In addition.[Cr] constituent content is had to the steel grade of requirement, must in the time tapping, add in ladle containing Cr alloy, or add in follow-up refining procedure.
According to the control method that packs into of a kind of converter high alloy steel scrap of the present invention, it is characterized in that, the content of any of Cu, the Ni of described high alloy steel scrap or Mo is greater than 0.2%, and more than one total content is at 0.2%-10%.
According to the control method that packs into of a kind of converter high alloy steel scrap of the present invention, it is characterized in that, described high alloy steel scrap is cupric steel scrap, copper chrome molybdenum steel scrap, new copper nickel steel scrap, copper nickel chromium triangle steel scrap, new copper Ni-Cr-Mo steel scrap, contains molybdenum steel scrap, nickeliferous steel scrap, Ni-Cr-Mo steel scrap.
According to the control method that packs into of a kind of converter high alloy steel scrap of the present invention, it is characterized in that, in step (2), being calculated as follows of high alloy adding amount of scrap steel:
For in target steel grade being only single alloy content high alloy adding amount of scrap steel numerical procedure while being selected from any alloy content requirement of Mo, Cu or Ni:
WTscrap_mo=[(WTsteel×TGmo)÷SCmo]÷RTscrap
WTscrap_ni＝[(WTsteel×TGni)÷SCni]÷RTscrap
WTscrap_cu=[(WTsteel×TGcu)÷SCcu]÷RTscrap
Wherein, WTscrap_mo is " containing Mo adding amount of scrap steel ",
WTscrap_cu is " containing Cu adding amount of scrap steel ",
WTscrap_ni is " containing Ni adding amount of scrap steel ",
WTsteel is " target tap ",
RTscrap is " steel scrap iron content rate ",
TGmo is " steel grade target Mo content ",
SCmo is " steel scrap Mo content ",
TGmo is " steel grade target Cu content ",
SCcu is " steel scrap Cu content ",
TGni is " steel grade target Ni content ",
SCni is " steel scrap Ni content ".
According to the control method that packs into of a kind of converter high alloy steel scrap of the present invention, it is characterized in that, in the time that one or more add-ons of WTscrap_mo, WTscrap_ni and WTscrap_cu are greater than WTscrap*0.5, the value control of getting WTscrap_mo, WTscrap_ni and one or more add-ons of WTscrap_cu is WTscrap*0.5.
According to the control method that packs into of a kind of converter high alloy steel scrap of the present invention, it is characterized in that, after adding high alloy steel scrap, in described steel scrap target total amount, add light (type) steel scrap.Light scrap add-on WTscrap_ot is calculated as:
Add containing after Mo high alloy steel scrap,
WTscrap_ot=WTscrap-WTscrap_mo
Add containing after Ni high alloy steel scrap,
WTscrap_ot=WTscrap-WTscrap_ni
Add containing after Cu high alloy steel scrap,
WTscrap_ot=WTscrap-WTscrap_cu
According to the control method that packs into of a kind of converter high alloy steel scrap of the present invention, it is characterized in that, after adding heavy high alloy steel scrap, in described steel scrap target total amount, add light scrap.
According to the control method that packs into of a kind of converter high alloy steel scrap of the present invention, it is characterized in that,
In step (3), when the content of any more than 2 alloying element in [Cu], [Ni], [Mo] is had to requirement, can first calculate wherein a kind of high alloy steel scrap, then calculate other high alloy steel scraps.
According to the control method that packs into of a kind of converter high alloy steel scrap of the present invention, it is characterized in that,
In step (4), common alloy refers to copper coin, nickel plate and molybdenum-iron, and common alloy addition is calculated as follows:
If " molybdenum-iron add-on " is WTmo,
" copper coin add-on " is WTcu,
" nickel plate add-on " is WTni, has:
WTmo=(TGmo-SCmo × WTscrap_mo ÷ WTsteel) × WTsteel × coefficient 1
WTcu=(TGcu-SCcu × WTscrap_cu ÷ WTsteel) × WTsteel × coefficient 2
WTni=(TGni-SCni × WTscrap_ni ÷ WTsteel) × WTsteel × coefficient 3
Coefficient 1=1.50-1.70, coefficient 2=0.9-1.1, coefficient 3=0.9-1.1.
According to the present invention, common alloy refers to common high purity copper coin, nickel plate and molybdenum-iron.
High alloy steel scrap is the steel scrap after resource reclaims, and its main component is iron, but also contains certain alloying constituent.And common alloy comes from other ferroalloy works, alloy content is greater than the content of iron, and price is higher.Because described copper coin, nickel plate and molybdenum-iron add important but their price is higher, so preferentially drop into heavy alloyed steel scrap, to reduce the input of these common alloys, reduce smelting cost.
According to the control method that packs into of a kind of converter high alloy steel scrap of the present invention, it is characterized in that coefficient 1=1.67, coefficient 2=1.0, coefficient 3=1.0.
According to the control method that packs into of a kind of converter high alloy steel scrap of the present invention, it is characterized in that, adding of common alloy (common alloy refers to copper coin, nickel plate and molybdenum-iron) is fashionable:
Get: coefficient 2=1.0, coefficient 3=1.0.In molybdenum-iron, the content of molybdenum is 60% left and right, gets coefficient 1=1.67.
Because Cu, Ni can not be oxidized when the converter smelting, so get: coefficient 2=1.0, coefficient 3=1.0.In molybdenum-iron, the content of molybdenum is 60% left and right, gets coefficient 1=1.67.
According to the control method that packs into of a kind of converter high alloy steel scrap of the present invention, described converter high alloy steel scrap pack the controlling party genealogy of law into according to the alloy content requirement of target steel grade, calculate the maximum high alloy adding amount of scrap steel that can substitute common alloy, and guide the weighing action command of establishment steel scrap.According to the present invention, after steel scrap weigh bridge home scrap add-on, calculate the usage quantity of the common alloys such as copper coin, on the basis of the constituent content control of realize target steel grade, reach and rationally utilize secondary metals resource, reduce the object that alloy smelting consumes.The present invention has been applied to actual converter and has produced, and has applicable steel grade many, calculate accurately, and the feature that level of automation is high, promotion prospect is wide.
Accompanying drawing explanation
Fig. 1 is system logic figure of the present invention.
Fig. 2 is schematic flow sheet of the present invention.
Embodiment
Below, for embodiment, illustrate the present invention.
Embodiment 1:
Stove seat number=2
Tapping sequence number (SN)=225758
Target steel grade=AK334211, the alloying element content in its steel grade target requires as [Cu]=0.00%, [Ni]=0.15%, [Cr]=0.00%, [Mo]=0.00%.
The target tap WTsteel=300 ton of this stove steel, main raw material computation model calculates steel scrap target total amount=48.08 ton.
Adding code name is 1288 nickeliferous steel scrap (heavy-duty waste steel), and its parameter is for containing [Ni]=0.65%, iron-holder=98%:
WTscrap_ni=[(WTsteel×TGni)÷SCni]÷RTscrap
70.64 tons of=[(300 × 0.0015) ÷ 0.0065] ÷ 0.98 ≈
Be no more than 50% regulation according to heavily useless than ((heavy type) high alloy adding amount of scrap steel accounts for the ratio of steel scrap target total amount), get WTscrap_ni=24 ton.
Add the calculating formula of common alloy (nickel plate):
WTni=(TGni-SCni × WTscrap_ni ÷ WTsteel) × WTsteel × coefficient 3=(0.0015-0.0065 × 24 ÷ 300) × 300 × 1.0=0.294 ton
Need again to add 294 kilograms of nickel plates.
In this embodiment, owing to having added nickeliferous steel scrap, can save 156 kilograms of nickel plates.
Embodiment 2:
Stove seat number=3
Tapping sequence number (SN)=325759
Target steel grade=XM382312, the alloying element content in its steel grade target requires as [Cu]=0.00%, [Ni]=0.13, [Cr]=1.00%, [Mo]=0.22%.
The target tap WTsteel=300 ton of this stove steel, main raw material computation model calculates steel scrap target total amount=49.18 ton.
Scheme 1:
Adding code name is 1272 Ni-Cr-Mo steel scrap (heavy-duty waste steel), and its parameter is for containing [Ni]=1.08%, [Mo]=0.3%, iron-holder=98%.Owing to containing [Ni] height in this steel scrap, calculate by meeting target steel grade [Ni] constituent content:
WTscrap_ni＝[(WTsteel×TGni)÷SCni]÷RTscrap
36.85 tons of=[(300 × 0.0013) ÷ 0.0108] ÷ 0.98 ≈
According to heavily useless in the regulation that is no more than 50%, get WTscrap_ni=24.59 ton.
(1) add the calculating formula of common alloy (nickel plate):
WTni=(TGni-SCni × WTscrap_ni ÷ WTsteel) × WTsteel × coefficient 3=(0.0013-0.0108 × 24.59 ÷ 300) × 300 × 1.0=0.124 ton
Need again to add 124 kilograms of nickel plates.
(2) now, WTscrap_mo=WTscrap_ni=24.59 ton.
WTmo=(TGmo-SCmo × WTscrap_mo ÷ WTsteel) × WTsteel × coefficient 1
=(0.0022-0.003 × 24.59 ÷ 300) × 300 × 1.67=0.979 ton
Need again to add 979 kilograms of molybdenum-irons.
In this scheme, adding after 36CrNiMo4 high alloy steel scrap, need to add 124 kilograms of nickel plates, 979 kilograms of molybdenum-irons.
Scheme 2:
Adding code name is 1288 nickeliferous steel scrap (heavy-duty waste steel), and its parameter is for containing [Ni]=0.65%, iron-holder=98%:
WTscrap_ni＝[(WTsteel×TGni)÷SCni]÷RTscrap
61.22 tons of=[(300 × 0.0013) ÷ 0.0065] ÷ 0.98 ≈
According to heavily useless in the regulation that is no more than 50%, get WTscrap_ni=24.59 ton.
(1) add the calculating formula of common alloy (nickel plate):
WTni=(TGni-SCni × WTscrap_ni ÷ WTsteel) × WTsteel × coefficient 3=(0.0013-0.0065 × 24.59 ÷ 300) × 300 × 1.0=0.230 ton
Need again to add 230 kilograms of nickel plates.
(2) now, WTscrap_mo=WTscrap_ni=24.59 ton.
WTmo=(TGmo-SCmo × WTscrap_mo ÷ WTsteel) × WTsteel × coefficient 1
=(0.0022-0 × 24.59 ÷ 300) × 300 × 1.67=1.102 ton
Need again to add 1102 kilograms of molybdenum-irons.
In this scheme, adding after nickeliferous high alloy steel scrap, need to add 230 kilograms of nickel plates, 1102 kilograms of molybdenum-irons.
Scheme 3:
Add code name be 1287 containing molybdenum steel scrap (heavy-duty waste steel), its parameter is for containing [Mo]=0.55%, iron-holder=98%:
WTscrap_mo=[(WTsteel×TGmo)÷SCmo]÷RTscrap
122.45 tons of=[(300 × 0.0022) ÷ 0.0055] ÷ 0.98 ≈
According to heavily useless in the regulation that is no more than 50%, get WTscrap_ni=24.59 ton.
Add the calculating formula of common alloy (molybdenum-iron):
WTmo=(TGmo-SCmo × WTscrap_mo ÷ WTsteel) × WTsteel × coefficient 1
=(0.0022-0.0055 × 24.59 ÷ 300) × 300 × 1.0=0.876 ton
Need again to add 876 kilograms of molybdenum-irons.
(2) now, WTscrap_ni=WTscrap_mo=24.59 ton.
WTni=(TGni-SCni × WTscrap_ni ÷ WTsteel) × WTsteel × coefficient 3=(0.0013-0 × 24.59 ÷ 300) × 300 × 1.0=0.39 ton
Need again to add 390 kilograms of nickel plates.
In this scheme, after adding containing molybdenum high alloy steel scrap, need to add 390 kilograms of nickel plates, 876 kilograms of molybdenum-irons.
According to the embodiment of the present invention, after the production program is assigned, main raw material Intake Quantity computation model calculates molten iron and the adding amount of scrap steel of each stove automatically, and according to [S] content of target steel grade, steel scrap is carried out to proportioning calculating, on the basis that this patent calculates in proportioning, calculate again high alloy steel scrap and the common alloy amount that can add.After steel grade changes, this patent can carry out automatic calibration to the predetermined amount that packs into of high alloy steel scrap and common alloy automatically, to guarantee the chemical element content of steel grade target.The automatic account form of this patent, can eliminate the individual difference that manual operations brings, and packing into of standard converter main raw material, has both guaranteed the control of molten steel composition, can reduce again alloy consuming cost, has very important economic implications.
According to the present invention, on the basis of system original function, increase high alloy steel scrap proportioning computing module.When after the automatic computation model end of run of converter main raw material, pass to high alloy steel scrap proportioning computing module using the adding amount of scrap steel of needs as parameter, calculate rational steel scrap mix proportion scheme by the latter.Steel-making operator is after selected scheme, and steel scrap weighs predetermined amount and assigns to steel scrap Weighing system.Steel scrap weigh bridge feeds back adding amount of scrap steel to system after weighing finishes, and calculates the common alloy that needs interpolation, adds in scrap box.In the time of plan or steel grade change, can in steel scrap, molten iron weighing operation room terminal, make special demonstration, remind operative employee to weigh preset value and change, need, by new subscription value adjustment weighing plan, to issue weighing action command.System logic figure is shown in Fig. 1.
According to the control method that packs into of a kind of converter high alloy steel scrap of the present invention, described converter high alloy steel scrap pack the controlling party genealogy of law into according to the alloy content requirement of target steel grade, calculate the maximum high alloy adding amount of scrap steel that can substitute common alloy, and guide the weighing action command of establishment steel scrap.According to the present invention, after steel scrap weigh bridge home scrap add-on, calculate the usage quantity of the common alloys such as copper coin, on the basis of the constituent content control of realize target steel grade, reach and rationally utilize secondary metals resource, reduce the object that alloy smelting consumes.The present invention has been applied to actual converter and has produced, and has applicable steel grade many, calculate accurately, and the feature that level of automation is high, promotion prospect is wide.
Claims (10)
- Converter high alloy steel scrap pack a control method into, it is characterized in that, described method comprises the steps:(1) according to steel grade and converter target tap, calculating must add the steel scrap target total amount in converter, and described steel scrap target total amount is calculated by main raw material computation model,(2) judge that described steel grade has or not high alloy content requirement,As nothing, the proportioning that proceeds to ordinary scrap steel is calculated and is dropped into,If any, entering following step (3), the high alloy adding amount of scrap steel carrying out in steel scrap target total amount calculates and drops into,(3) the high alloy adding amount of scrap steel carrying out in steel scrap target total amount calculates and feeds back, and judges whether the high alloy adding amount of scrap steel in the steel scrap target total amount of described steel grade meets alloying element content requirement,(4), as met alloying element content requirement, the proportioning that proceeds to ordinary scrap steel is calculated and is dropped into,As do not meet alloying element content requirement, carry out again common alloy addition calculating and input, until meet the requirements.
- As claimed in claim 1 a kind of converter high alloy steel scrap pack control method into, it is characterized in that, in step (3), the high alloy adding amount of scrap steel in described steel scrap target total amount is controlled, the proportion that described high alloy adding amount of scrap steel accounts for steel scrap target total amount is no more than 50%Described high alloy steel scrap refer to contain a certain amount of Cu, Ni, Cr, Mo or W one or more, at the not oxidizable special steel scrap of converter smelting interalloy element.
- As claimed in claim 1 a kind of converter high alloy steel scrap pack control method into, it is characterized in that, described high alloy steel scrap contains one or more of a certain amount of Cu, Ni, Mo, the content of any of described Cu, Ni, Mo is at 0.2%-10%.
- As claimed in claim 3 a kind of converter high alloy steel scrap pack control method into, it is characterized in that, the content of any of Cu, the Ni of described high alloy steel scrap or Mo is greater than 0.2%, more than one total content is at 0.2%-10%.
- As described in any one of claim 1-3 a kind of converter high alloy steel scrap pack control method into, it is characterized in that, described high alloy steel scrap is cupric steel scrap, copper chrome molybdenum steel scrap, new copper nickel steel scrap, copper nickel chromium triangle steel scrap, new copper Ni-Cr-Mo steel scrap, contains molybdenum steel scrap, nickeliferous steel scrap, Ni-Cr-Mo steel scrap.
- As described in any one of claim 1-3 a kind of converter high alloy steel scrap pack control method into, it is characterized in that, in step (2), being calculated as follows of high alloy adding amount of scrap steel:For in target steel grade being only single alloy content high alloy adding amount of scrap steel numerical procedure while being selected from any alloy content requirement of Mo, Cu or Ni:WTscrap_mo=[(WTsteel×TGmo)÷SCmo]÷RTscrapWTscrap_ni＝[(WTsteel×TGni)÷SCni]÷RTscrapWTscrap_cu=[(WTsteel×TGcu)÷SCcu]÷RTscrapWherein, WTscrap_mo is " containing Mo adding amount of scrap steel ",WTscrap_cu is " containing Cu adding amount of scrap steel ",WTscrap_ni is " containing Ni adding amount of scrap steel ",WTsteel is " target tap ",RTscrap is " steel scrap iron content rate ",TGmo is " steel grade target Mo content ",SCmo is " steel scrap Mo content ",TGmo is " steel grade target Cu content ",SCcu is " steel scrap Cu content ",TGni is " steel grade target Ni content ",SCni is " steel scrap Ni content ".
- As described in any one of claim 1-3 a kind of converter high alloy steel scrap pack control method into, it is characterized in that, in the time that one or more add-ons of WTscrap_mo, WTscrap_ni and WTscrap_cu are greater than WTscrap*0.5, the value of getting WTscrap_mo, WTscrap_ni and one or more add-ons of WTscrap_cu is WTscrap*0.5.
- As described in any one of claim 1-3 a kind of converter high alloy steel scrap pack control method into, it is characterized in that,After adding high alloy steel scrap, being calculated as of light scrap add-on WTscrap_ot add light scrap in described steel scrap target total amount time:Add containing after Mo high alloy steel scrap,WTscrap_ot=WTscrap-WTscrap_moAdd containing after Ni high alloy steel scrap,WTscrap_ot=WTscrap-WTscrap_niAdd containing after Cu high alloy steel scrap,WTscrap_ot=WTscrap-WTscrap_cu。
- As described in any one of claim 1-3 a kind of converter high alloy steel scrap pack control method into, it is characterized in that, in step (4), the add-on of common alloy is calculated as follows:If " molybdenum-iron add-on " is WTmo," copper coin add-on " is WTcu," nickel plate add-on " is WTni, has:WTmo=(TGmo-SCmo × WTscrap_mo ÷ WTsteel) × WTsteel × coefficient 1WTcu=(TGcu-SCcu × WTscrap_cu ÷ WTsteel) × WTsteel × coefficient 2WTni=(TGni-SCni × WTscrap_ni ÷ WTsteel) × WTsteel × coefficient 3Coefficient 1=1.50-1.70, coefficient 2=0.9-1.1, coefficient 3=0.9-1.1.
- As described in any one of claim 1-3 a kind of converter high alloy steel scrap pack control method into, it is characterized in that, described high alloy steel scrap is heavy high alloy steel scrap.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105969938A (en) * | 2016-06-27 | 2016-09-28 | 江阴兴澄特种钢铁有限公司 | Technology for consuming high nickel and molybdenum reclaimed materials through alloy steel external LF-VD |
| CN110952024A (en) * | 2019-11-08 | 2020-04-03 | 包头钢铁（集团）有限责任公司 | Method for smelting Cu-containing steel by using Cu-containing scrap steel converter |
| CN110951933A (en) * | 2019-11-08 | 2020-04-03 | 包头钢铁（集团）有限责任公司 | Method for smelting Mo steel by using Mo-containing steel scrap converter |
| CN112575140A (en) * | 2019-09-30 | 2021-03-30 | 上海梅山钢铁股份有限公司 | Method for controlling weighing of converter scrap steel |
| CN115074479A (en) * | 2022-05-09 | 2022-09-20 | 包头钢铁（集团）有限责任公司 | Method for calculating temperature and weight of molten steel tank and scrap steel |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105969938A (en) * | 2016-06-27 | 2016-09-28 | 江阴兴澄特种钢铁有限公司 | Technology for consuming high nickel and molybdenum reclaimed materials through alloy steel external LF-VD |
| CN105969938B (en) * | 2016-06-27 | 2018-05-01 | 江阴兴澄特种钢铁有限公司 | The outer LF-VD of alloy steel stove digests nickelic molybdenum reclaimed materials technique |
| CN112575140A (en) * | 2019-09-30 | 2021-03-30 | 上海梅山钢铁股份有限公司 | Method for controlling weighing of converter scrap steel |
| CN110952024A (en) * | 2019-11-08 | 2020-04-03 | 包头钢铁（集团）有限责任公司 | Method for smelting Cu-containing steel by using Cu-containing scrap steel converter |
| CN110951933A (en) * | 2019-11-08 | 2020-04-03 | 包头钢铁（集团）有限责任公司 | Method for smelting Mo steel by using Mo-containing steel scrap converter |
| CN115074479A (en) * | 2022-05-09 | 2022-09-20 | 包头钢铁（集团）有限责任公司 | Method for calculating temperature and weight of molten steel tank and scrap steel |
| CN115074479B (en) * | 2022-05-09 | 2023-12-12 | 包头钢铁（集团）有限责任公司 | Temperature weight calculation method for adding scrap steel into molten steel tank |
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